Analysis of Biomechanical Properties of the Lumbar Extensor Myofascia in Elderly Patients with Chronic Low Back Pain and That in Healthy People
Table 3
Statistical results of biomechanical properties (muscle tone, stiffness, and elasticity) of the lumbar extensor myofascia in the CLBP group and control group.
CLBP
Control participant
P value
Left
Muscle tone
Mean ± SD
16.45 ± 2.14
15.15 ± 1.46
0.003
Range
(11.75–20.20)
(12.55–19.30)
Stiffness
Mean ± SD
319.66 ± 73.47
273.53 ± 44.53
0.002
Range
(172.00–470.50)
(182.50–375.50)
Logarithmic decrement
Mean ± SD
1.48 ± 0.30
1.27 ± 0.19
0.001
Range
(1.07–2.34)
(0.96–1.70)
Right
Muscle tone
Mean ± SD
16.33 ± 2.07
15.21 ± 1.68
0.010
Range
(12.50–20.20)
(11.00–19.45)
Stiffness
Mean ± SD
318.77 ± 75.67
280.57 ± 49.35
0.018
Range
(184.00–480.50)
(180.00–417.50)
Logarithmic decrement
Mean ± SD
1.45 ± 0.30
1.30 ± 0.17
0.013
Range
(0.95–2.19)
(0.91–1.70)
Bilateral average
Muscle tone
Mean ± SD
16.39 ± 2.07
15.18 ± 1.49
0.006
Range
(12.13–20.10)
(11.78–18.75)
Stiffness
Mean ± SD
319.21 ± 73.75
277.05 ± 44.70
0.006
Range
(178.00–475.50)
(194.00–382.00)
Logarithmic decrement
Mean ± SD
1.47 ± 0.28
1.28 ± 0.16
0.002
Range
(1.02–2.27)
(0.95 ± 1.62)
SD: standard deviation; CLBP: chronic low back pain. P values were derived from nonparametric Mann–Whitney U test results for the CLBP group and control group.
